{"product_id":"siemens-3rv2021-4ba10-circuit-breaker","title":"Siemens 3RV2021-4BA10 - Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eThe Siemens 3RV2021-4BA10 molded case circuit breaker is built to deliver dependable branch circuit overcurrent and short-circuit protection for residential, commercial, and light industrial panel layouts. Part of Siemens’ trusted protection lineup, this compact device combines a robust molded case design with a thermal-magnetic trip unit to provide stable, repeatable performance in demanding electrical environments. Available from AmpState, it’s ready to integrate with Siemens OEM panelboards and loadcenters for a seamless protection solution.\u003c\/p\u003e \u003ch2\u003eKey Features and Benefits\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eCompact molded case design\u003c\/strong\u003e maximizes panel space and simplifies wiring in crowded electrical spaces.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e delivers reliable overload and short-circuit protection with repeatable response characteristics, reducing nuisance trips and protecting connected circuits.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible\u003c\/strong\u003e designed to work with matching Siemens loadcenters and panelboards for straightforward installation and guaranteed system compatibility.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile application\u003c\/strong\u003e suitable for residential panels, commercial distribution gear, and light industrial electrical setups, providing a unified protection approach across your project.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eWhy This Breaker Matters\u003c\/h2\u003e\n\u003cp\u003eElectrical systems depend on precise protection to prevent damage, downtime, and safety hazards. The 3RV2021-4BA10 offers a targeted, reliable solution for safeguarding branch circuits against overloads and short circuits. Its compact form factor helps you maximize usable space in panelboards, while the thermal-magnetic trip unit ensures protection remains consistent across varying load conditions—crucial for circuits that experience fluctuating currents in real-world use.\u003c\/p\u003e \u003ch2\u003eIdeal Use Scenarios\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eUpgrading or adding circuits in residential main panels where space is at a premium but protection remains critical.\u003c\/li\u003e \u003cli\u003eInstalling in small commercial distribution panels to protect multiple branch circuits with dependable, repeatable trip responses.\u003c\/li\u003e \u003cli\u003eIntegrating into light industrial control panels where reliable short-circuit protection helps minimize equipment downtime.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eInstallation and Compatibility Tips\u003c\/h2\u003e\n\u003cp\u003eFor best results, pair the 3RV2021-4BA10 with Siemens OEM panelboards and loadcenters to ensure optimal fit, electrical connections, and coordination with other protective devices. When replacing similar devices, choose the exact part number to maintain consistent protection characteristics. Always follow local electrical codes and Siemens installation guidelines, confirm the correct frame size and trip rating for your circuit, and ensure secure termination and proper enclosure sealing after installation.\u003c\/p\u003e \u003ch2\u003eWhy AmpState Chooses Siemens\u003c\/h2\u003e\n\u003cp\u003eAs a trusted distributor, AmpState offers the Siemens 3RV2021-4BA10 to professionals seeking durable, reliable branch circuit protection. This breaker’s combination of compact design, thermal-magnetic protection, and OEM compatibility provides a clear, practical upgrade path for improving panel performance and safety across a range of applications.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349742866594,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens_breaker_and_panel_f98c53e2-8c90-4bb7-88fc-5d2db368f234.png?v=1764155695","url":"https:\/\/www.ampstate.com\/products\/siemens-3rv2021-4ba10-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}